P
US6232249B1ExpiredUtilityPatentIndex 92

Short fiber-containing down-feather wadding and process for producing the same

Priority: May 8, 1996Filed: May 6, 1997Granted: May 15, 2001
Est. expiryMay 8, 2016(expired)· nominal 20-yr term from priority
Inventors:KAWADA YUKIHIRO
D04H 1/548D04H 5/06D04H 1/549D04H 1/55Y10T442/698B68G 1/00Y10T442/627D04H 1/4266D04H 1/4258Y10T442/619Y10T442/697B68G 2001/005B68G 3/10Y10T428/26Y10T442/626A47G 9/007D04H 1/06D04H 1/42D04H 1/50A47G 9/0207D04H 1/02
92
PatentIndex Score
47
Cited by
3
References
6
Claims

Abstract

A short fiber-containing down-feather wadding in which the short fibers are entangled in barbs of the down-feathers. In this wadding, the short fibers are uniformly mixed with the down-feathers, and the properties of the down-feathers, and the short fibers are effectively imparted to the wadding.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
       1. A filling material comprising down-feathers mixed with short fibers, wherein the short fibers are entangled in barbs of the down-feathers and the short fibers are curled by heat-setting, obtained by 
       (1) stirring short fibers and washed down-feathers in a mixing bath containing a surfactant-type softener to entangle the short fibers into barbs of the down-feathers, and  
       (2) dehydrating and drying the entangled mixture, and then heat-setting the resultant mixture.  
     
     
       2. The filling material of claim  1 , wherein the short fiber are functional fibers. 
     
     
       3. The filling material of claim  1 , wherein the short fibers have a size of from 1 to 20 denier and a length of from 1 to 50 mm. 
     
     
       4. A filling material comprising down-feathers mixed with short fibers, wherein the short fibers are entangled in barbs of the down-feathers and the short fibers are curled by heat-setting, obtained by 
       (1) stirring short fibers and washed wet down-feathers in a closed-type mixing bath containing a surfactant-type softener to entangle the short fibers into barbs of the down-feathers, and  
       (2) dehydrating and drying the entangled mixture, and then heat-setting the resulting mixture.  
     
     
       5. The filling material of claim  4 , wherein the short fibers are functional fibers. 
     
     
       6. The filling material of claim  4 , wherein the short fibers have a size of from 1 to 20 denier and a length of from 1 to 50 mm.

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